Vapor-generator



w h S n t e e h s 2 v E L S D R A B B A l m d 0 M o W VAPOR GENERATOR.

No. 348,820. Patented Sept. 7, 1886.

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2 Sheets8heet 2.

(No Model.)

J. A. BEARDSLEY.

VAPOR GENERATOR.

No. 348,820. Patented Sept. 7, 1886.

3 0f avwamtoz Witnesses N. PETERS. mmLith -a mr. Wahington. 92 G UNITED STATES PATENT OFFICE.

JOHN ALLAN BEARDSIJEY, OF MINNEAPOLIS, MINNESOTA.

VAPOR-GENERATOR.

EPECIPICATION forming part of Letters Patent No. 348,820, dated September 7, 1886.

Application filed June 1, 1986.

T0 at 2071/0717, it may concern:

Be it known that l, Jenn ALLAN Bmnns LEY, a citizen of the United States, residing at Minneapolisin the county of Hennepin and State of Minnesota, have invented a new and useful Improvement in Vapor-Generators, of which the following is a specification.

My invention relates to an improvement in vapougenerators for engines; and it consists in the peculiar construction and combination of'devices, that will be more fully set forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figure 1 is an elevation of an apparatus embodying my improvements. Fig. 2 is a detail vertical sectional view of the boiler or generator. Figs. Sand 4 are detailed sectional views of the blower and the condenser. 1

A represents a vertical steam-boiler of the usual constrnction,whieh is provided with the usual water-wall and vertical fines B. In the space inclosed between the heads of the boiler is located a series of pipes, O,which communieate with each other at their npperand lower ends.

D represents the vertical supply tank or reservoir to contain the gasoline, and from the lower end of the said tank extends a pipe, E,which communicates with a pump,F. From the upper end of the tank extends a pipe, G, thelower end ofwhich is connected to thelower end of the system of pipes C. A cutoff valve, II, is provided in the pipe G, for the purpose ofelosing communication of the said pipe with the pipes (J.

I represents a pressure-dome, the lower end of which is connected by means of a pipe, K, with the pipe (l, and the pump F is also connected to the dome by means of a pipe, L.

M represents a pipe which is connected to the upper ends of the pipes (l, and extends to an engine, N, forming the supply-pipe, to ad mit vapor to the said. engine. This engine may be constructed in any suitable well'known manner, and is not more particularly dcseribed herein, for the reason that it forms no part of my invention. The pump F is connected to and actuated by the shaft 0 of the e11- gine, and the said shaft is also provided with a sprocket-wheel or beltpulley, P, and also a pulley, 1?.

Serial No. 203,510.

(No modil.)

S represents the exhaust-pipe of the engine, which terminates in a coil, T, located within a tank or condenser, U. The lower end of the said coil is connected to and communicates with the upper end of the tank or reservoir D, as at T.

V represents a rotary blower, from the case of which extends the pipe XV, which communicates with the upper end of the condenser T. This blower is provided with a pulley, X, connected by means of an endless belt, X, with the pulley R. A small water tank, Y, is located above the blower, and communication is established between thelower end of the said tank and the upper side of the case of the blower by means of a pipe, Z.

a represents a weighted valve, which is located in the pipe G, near the upper end of the same, and 1) represents a pressuregage which communicates with the pipe C.

The object of this invention is to provide a very powerful motor,whieh may be located in a very small space, and which shall be noise less, entirely safe, and operated at a slight eost;and the operation of my invention is as follows: The tank I) is filled withgasoline' or other suitable volatile fluid which vaporizes at a comparatively low temperature, and a suitable quantity of water is placed in the boiler, in the usual manner, around the pipes O. A portion of the gasoline is supplied from the tank D, through the pipes K and E, to the pipe 0, located in the boiler, and steam is generated' in the boiler by means of a lire in the fire-box. The boiling water surrounding the pipes C rapidly. reduces the gasoline therein to a vapor of great expansive force and high pressure, which is fed through the pipe N to the engine and operates the same. As the pump F is connected to the shaft 0 of the en gine, the said pump is operated and draws gasoline from the tank D and forcesit into the dome I, and from thence through the pipe K into the pipes C, until the pressure of the gasoline in the dome equals the pressure of the gasoline in the pipes C. An excess of pressure in the said pipes causes the weighted valve ato open,and thereby permit a portion of the gasoline to pass through the pi pc G- back into the tank D. The exhaust-vapor from the engine is conducted by the pipe Site the coil T. During the operation of the engine the blower V is in rapid rotation,thereby forcing air through the pipeWinto the tank or condenser T, thus reducing the temperature of the condenser, and causing it to condense the vapor in the coil T and discharge the same back into the supply-tank D, thus using the same gasoline over and over again, and preventing any of it from becoming lost. The water from the tank Y is fed in small quantities through the pipe Z to the upper side of the case of the blower, and becomes vaporized or atomized by the action of the blower, and thoroughly incorporated with the air that is being forced through the pipe \V into the condenser, thus reducing the temperature of the air. It will be readily understood that the gasoline is vaporized almost instantaneously in the pipes C, and carried through the pipe M to the steamengine; and in order to keep the said pipes O constantly supplied with gasoline it is necessary to confine a body ofgasoline in the dome I at a pressure equal to the pressure of the gasoline in the pipes O, as hereinbefore described. As the gasoline vaporizes at a comparatively low temperature, it is not necessary to have the steam-pressure in the boiler very high. I find by experiment that a steampressure of eighty pounds to the square inch in the boiler causes a pressure of the vapor of about four hundred pounds to the square inch in the pipes C. As the said pipes are of small diameter, (usually about four inches,) this pressure may be maintained in the said pipes without danger of bursting them. In order to stop the engine the valve H is closed. This cuts off the supply of gasoline from the pipes C and maintains the pressure in the dome, so that in order to again start the engine it is only necessary to open the valve H. A motor thus constructed is particularly adapted for use in propelling street cars, yachts, and canal-boats, where it is necessary to have a very powerful engine in a small space; but the apparatus is adapted for operating any sort of machinery for which a common steam-engine may be employed. As it is only necessary to maintain a slight pressure of steam in the boiler, and as the gasoline is used over and over again to operate the engine, it will be understood that the latter may b nicating with the said pipes, for the purpose set forth, substantially as described.

2. The combination of the pipe 0, the pressure-dome, and means far maintaining the pressure in the dome, substantially as described.

3. The combination of the supply-tank D, the pressure dome, the generating -pipes O, the pipe K,connecting the pressure-dome with the generating-pipes, the pipe G, extending from the pipe K to the tank or reservoir, and having the pressure-valve a, and the pump or means for supplying the gasoline or other fluid from the reservoir D to the pressuredome, for the purpose set forth, substantially as described.

4. The combination, with the generatingpipes C, of the engine deriving its supply from the said pipe, the tank or reservoir D, the pressure-dome, the pump for forcing the gasoline or fluid from the tank D to the press nre-dome, the pipe K,connecting the pressuredome with the generating-pipe C, and the condenser communicating with the exhaust of the engine and with the tank D, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JOHN ALLAN B'EARDSLEY.

\Vitnesses:

EDWARD H. ORooKER, EDsoN S. GAYLORD. 

